FirstProgram.md

Write And Execute Python Basic Program.

• As Consider we have already completed python setup in windows machine in the previous tutorial Now the main basic task is to write a full python code and execute our python first program.

What is the use of python idle terminal ?

you can write your small code on idle terminal and press enter to execute

Example:

print("I am from terminal ")

Output:

I am from terminal 

you can use python idle terminal as a calculator Example:

>5+6-7

and press enter to execute you will get the final result in the next line

>4

How to write a program in idle and run in python?

• After the opening of the idle terminal just press Ctrl+n to open a notepad like a python text editor.
• And write the required code inside the editor.
• Now save that file as your required name with extension.py

Example:

filename.py

How To Run Python file.

There are 2 way to run python file

1.Normal

• Open Python file in python IDLE.
• Now just press f5 or go running menu option and select run to execute the python file.
• Now the result will be displayed on your python Shell.

2. Using Terminal

• Open command prompt or terminal in your shell.
• Go to directory copy path and in command prompt and change command prompt directory using the following command.

>cd "directory path"

• after changing directory just type

dir>python filename.py

• Now your required result will be displayed on command prompt

Error And Solution

• if "python command is not recognized" occured

Solution

Add Python Path To System Variable

• Visit following path

My Computer >(Right Click) 
        Properties > 
                Advanced System Settings >
                             Environment Variables 

• Just add the path as C:\Python37 (or wherever you installed python) to PATH Variable.
• And Also Add python/scripts path to an environment variable.